Elastic-fluid turbine.



H. B. KARLIN.

ELASTIC FLUID TURBINE.

APPLICATION FILED MAR.20,1908.

Patented Dec. 1, 1908.

2 SHEETS-SHEET 1.

H. B. KARLIN.

ELASTIC FLUID TURBINE.

APPLICATION TILED MAR.20.1908.

8 z W m a W c m 7 1W M Q Eis g \Q 4 L W; 9 G0 With the bucket rings a dovetailed groove UNI'I ED UFFiltlE.

Application filed. l larch To all whom it may concern:

Be it known that I, IIALFDAN BlRGIDR KARLIN, engineer, a citizen of Sweden, residing at Stockholm, Sweden, have invented a certain new and useful Improvement in Elastic-Fluid Turbines, of which the following is a specification.

he invention relates to elastic liuicl turbines and more particularly to the rings of guide blades which project inwardly from the cylindrical casing or shell, and alternate with the rings of buckets on the wheel.

The invention consists in the mode of curing the guide blades to the casing, the arrangement of said blades in contact tcrin rings, and the combination with the blades of a lining or tightening annular piece which forms a joint with the wheel between the rings of buckets thereon.

In the'accompanying drawings l -ignre l is a face view of a part of the ring of fixed guide blades, with the casing and wheel in section on the line m a of Fig. 2. i 2 a section on the line 1 y of Fig, 1. i a perspective view of the lower halt if the turbine casing showing part of a ring; of guide blades in position, in this figure the edge ring 15 is omitted, Fig. at is a cross section of wheel and casin showing part of a ring of guide blades on t 1e casing and part of a ring of buckets on the wheel.

Fieu i a modified form .of joint between whe el periphery and guide blade.

Similar numbers of reference indicate like parts.

l is the turbine wheel having on its periphery rin s 2 of buckets, secured in place in any suita is way.

The wheel casing 4: is preferably formed in two horizontally divided. sections, united in the usual way by bolts passing through side flanges. The lower section 3 is shown in Fig, 3 On the inner peripherf of the casing are secured rings 6 of gui. e blades which, when the wheel is in place, alternate 2 on said wheel, as shown in Fig.2.

Each ring 6 of the casing in the the inner periphery guide blades is secured to following manner, of the casing is formed 'l, Each blade has a dovetailed shank constructed to fit in said groove. The blades may be introduced into the groove from one end thereof as shown at 8 Fig. 3 and are adjusted in contact that the dovetails completely t the groova Etpecificotion of Ll'ietterh Fill, will Elci'ial lilo. $22,239.

Patented lilac. 1, 1908.

l in the blades are passages 9 for axial flow of motor fluid, which passages 9 register in the usual way with similar passages 10 in the wheel bucs'ets. The passage 9 in each blade closed by the solid back 5 of the nest; adjacent blade, At the inner end of each blade is o solid. portion 11, and these solid portions come together to form a sub stantiaily solid ring 12 which in'nnediat'ely incloses the portion 13 of the turbine Wheel which lies between the rings 52 of wheel buckets. I

in order to form Working joints between tlle rings of guide blades and the portions 13 I of the turbine wheel, l provide for each ring of guide blades, an annular lining piece 15 secured in place in any suitable way,

Preferiibly the portion 11 of each blade has formed on its end a. tenou Isl and the tenons let unitcdly form. a rib which enters a circumferential groove in the linin piece 15, which ring is preferably more in two i sections corresponding to the half sec} tions of the casing. The tenons are fastuned in the groove by transverse rivets 16,

The inner surface of the lining piece 15 may be threaded as shown in Mg. 2 at. 1'2,

or provided witha plurality of annular channels and intervening projections 18 as shown in Fig. 5, so that a tightening jointof the labyrinth type is formed between i lining piece and wheel,

j which may be i l disposed in contact to form a inner circumferential face.

In an elastic fluid turbine, cylindrical bladecarrying turbine member, blades disposed in contact. to form a ring, coaxial with said member and secured therein, a. teuon on each blade, the said tenons forming cc'njointiy a rib on the inner circumferential I face of said ring, an annular lining piece in I said ring having a groove receiving said rib 1 l mean for connecting said rib and lining 4. In an elastic fluid turbine of the type in which rings of buckets on a rotary cylinder alternate with rings of guide blades fixed on the inner periphery of a cylindrical casing, an annular lining iece secured in each guide blade ring and inner circumferential face, channels and intervening partitions forming a joint with having, on its I the circumferential periphery of said cylinder.

In testimony whereof I have aflixed my signature in presence of two witnesses.

HALFDAN BIRGER KARLIN. Witnesses:

' WARDEMAR BOMAN,

' T. EKEBOHM. 

